<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-page-3/#margin-dimension">
<meta name="assert" content="Auto margins should never resolve to something negative, but be clamped to 0.">
<link rel="match" href="auto-margins-002-print-ref.html">
<style>
  @page {
    margin: 100px;
    size: 500px 440px;
    border: solid;
    background: red;
    @top-left-corner {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @top-left {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @top-center {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @top-right {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @top-right-corner {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @right-top {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @right-middle {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @right-bottom {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @bottom-right-corner {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @bottom-right {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @bottom-center {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @bottom-left {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @bottom-left-corner {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @left-bottom {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @left-middle {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
    @left-top {
      border: solid;
      margin: auto;
      content: "";
      background: green;
    }
  }
  body {
    background: white;
  }
</style>
There should be 16 margin boxes around this page area. They should take up all
available space, and there should be no red, only green rectangles with a black
border.
